Speed-recording apparatus.



Patented Mar. 4, I902.

B. W..EATON. SPEED RECORDING APPARATUS.

(Appliutim M A r. 11, on

No. 694,9l3.

(No Model.)

Mesa 21/126040? al a.

UNITED STATES PATENT OFFICE.

RUSSELL XV. EATON, OF BRUNSWICK, MAINE.

SPEED-RECORDING APPARATUS.

SPEUIFICATION forming part of Letters Patent N 0. 694,913, dated March 4, 1902.

Application filed April 17; 1901. Serial No. 56,185. (No model.)

To aZZ whom it may concern:

Be it known that I, BUssnLL W. EATON, citizen of the United States, and a resident of Brunswick, county of Cumberland, State of Maine, have invented an Improvement in Speed-Recordin g Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of means whereby the variation in speed of a prime driving member or a motor may be recorded in such a manner that by inspection of the record at the close ofthe day it may be readily ascertained whether the speed of the prime member has been too high or too low and at what particular period or periods during the day.

I have herein shownone practical embodiment of myinvention in connection with one well-known form of so-called watchmens clocks, as my invention can be very conveniently used in connection with such a clock.

Various novel features of myinvention will be hereinafter described, and particularly pointed out in the drawings.

Figure l is a view in elevation and partly diagrammatic showing one embodiment of my invention. Fig. 2 is a right-hand end elevation of the mechanism shown at the upper part of Fig. 1, and Fig. 3 is a side elevation of the cloclncase and the recording mechanism.

For the purposes of this invention the prime driving member may be a motor or one of the driving-shafts of a mill-such, for instance, as shown at A-and I have herein shown such member as provided with a worm 0;, in mesh with a wornrgear a, mounted to rotate on a stud aflsecured to or forming part ofastand or bracket A too said bracket being secured to anysuitable and convenient part of the building. The worm-gear has secured to or forming part of it a pinion o which meshes with a larger gear a rotatably mounted on a stud (6 011 the bracket, said gear a having projecting from its face and eccentric to the stud o a lug or pin 0..

In practice the gearing may be so arranged that the gear a will be rotated once in each half-hour, provided the prime driving memher A is running at its normal speed.

Instead of the period of time mentioned any other suitable period may be selected in which the gear a is to make one complete revolution.

I have shown in Fig. 1 an electric circuit comprising the wires 3 4c and a battery 13 or other suitable source of electrical energy, the said circuit having included therein one mem ber of a recording device which is responsive to change in the circuit.

Referring to Figs. 1 and 3, I have shown at O a watchmans clock, which may be of any suitable construction, and one member of the recording device is actuated by or through the clock to be moved thereby at a predetermined rate of speed.

I have found it convenient to use the rotatable dial-sheet c, which forms a part of a watehmans clock, as one member of the recording device, the other member being herein shown as a perforating-pin c, mounted to rock upon a suitable fulcrum 0 adjacent the dial and mounted on a supporting-frame c, .which latter sustains a suitable electromagnet on, the coils of which are in the circuit, as shown in Fig. 1. The armature m is mounted on the arm which carries the perforatingpin 0, so that when the magnet is energized the said pin will be drawn toward the dial to perforate or indent the same. A suitable spring 5, Fig. 3, may be employed to retract the armature when the electromagnet is deenergized.

I have provided a circuit-changer to change the condition of the circuit once for every revolution of the gear a and said circuitchanger may be of any suitable construction. Herein I have shown a fixed terminal t and a yieldingly-mounted contact-pen 0r cooperating terminal t, the two terminals in the structure herein shown being normally separated, with the circuit correspondingly open.

A bell'erank b b, fulcrnmed at b on the bracket A is arranged with the end of the arm Z) bearing against the pen-terminal t, any suitable insulating material being arranged upon the end of the arm I), as at 6, and I prefer to make the shorter arm I) of the bellcrank slightly yielding, said arm projecting into the path of the lug a. lVhenever the said lug o is brought into engagement with the arm Z), the gear a rotating in the dime-- tion of the arrow 10, Fig. 1, the bell-crank will be rocked and the circuit will be closed to thereby energize the magnet and cause the recording-pin c to cooperate with the dial 0. The yielding arm I) permits the lug a to snap past the same and quickly release it. I

Supposing for the sake of illustration that it is desired to keep a record every half-hour of the speed of the prime driving member A and that the dial 0 makes one complete revolution in twelve hours, if the prime member A is running at its normal speed the record sheet or dial a will be perforated once during every half-hour, giving a permanent speed record, which can be referred to at any time. If the speed of the prime member is below normal for one or more of the successive periods of time, then the perforations 011 the record-sheet will be more than one-half hour apart, while they will beless than a halfhour apart if the speed of the prime member has been greater than normal.

It will be understood that the watchmans:

the spirit and scope of my invention, for the mechanism intermediate the prime driving member and the circuit-changer may be variously constructed, the circuit-changer itself may be of any suitable construction, and it will be obvious that the change in the circuit may-be from open to closed condition, or vice versa; but, so far as I am aware, it is broadly novel to provide speed-recording mechanism for a prime driving member or motor in connection with a watchmans clock or similar device.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a speed-recording apparatus, a clock, an .electric circuit, a recorder, one member of which is actuated by the clock, a prime driving member, gearing actuated thereby, a circuit-changer in said circuit operated by said gearing and comprising a fixed terminal, a movable terminal, and an operating member adapted to connect the two terminals, said member being intermittingly and yieldingly engaged by said gearing and periodically operated. thereby.

In testimony whereof I have signed my name to this specification in the presence of two. subscribing witnesses.

RUSSELL W. EATON.

Witnesses: D. D. GILMAN,

PHILIP R001". 

